Setup basic things

.gitignore

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+bin/
+obj/

Makefile

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+CC = gcc
+CFLAGS=-g -Wall -DDEBUG -Wpedantic -lSDL2 -lSDL2_ttf
+SRCDIR=src
+OBJDIR=obj
+SRCS=$(wildcard $(SRCDIR)/*.c)
+
+# Substitute all .c with .o from SRCS
+OBJS=$(patsubst $(SRCDIR)/%.c, $(OBJDIR)/%.o, $(SRCS))
+BINDIR=bin
+BIN=$(BINDIR)/game
+
+all: $(BIN)
+
+release: CFLAGS=-Wall -Wpedantic -O2 -lSDL2 -lSDL2_ttf
+release: clean
+release: $(BIN)
+
+$(BIN): $(OBJS) $(BINDIR)
+	$(CC) $(CFLAGS) $(OBJS) -o $@
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.c $(OBJDIR)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(BINDIR):
+	mkdir $@
+
+$(OBJDIR):
+	mkdir $@
+
+.PHONY: clean
+.PHONY: test
+.PHONY: disass
+
+clean:
+	rm -rf $(BINDIR)/* $(OBJDIR)/*
+
+test:
+	$(BIN)
+
+disass:
+	objdump -S --disassemble $(OBJDIR)/$(FILE).o > $(OBJDIR)/$(FILE).s

src/cell.c

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+#include "cell.h"
+#include <stdlib.h>
+
+Cell* CreateCell(SDL_Rect rect) {
+    Cell* newCell = calloc(1, sizeof(Cell));
+
+    if (!newCell) {
+
+        return NULL;
+    }
+
+    newCell->Status = Alive;
+    newCell->Hitbox = rect;
+
+    return newCell;
+}

src/cell.h

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+#ifndef CELL_H
+#define CELL_H
+
+#include <SDL2/SDL_rect.h>
+
+typedef enum {
+    Alive,
+    Dead
+} State;
+
+typedef struct cell {
+    struct cell* TopLeft;
+    struct cell* Top;
+    struct cell* TopRight;
+    struct cell* Left;
+    struct cell* Right;
+    struct cell* BottomLeft;
+    struct cell* Botttom;
+    struct cell* BottomRight;
+    State Status;
+    SDL_Rect Hitbox;
+} Cell;
+
+Cell* CreateCell(SDL_Rect);
+
+#endif

src/main.c

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+#include "SDL2/SDL.h"
+#include <SDL2/SDL_events.h>
+#include <SDL2/SDL_hints.h>
+#include <SDL2/SDL_keycode.h>
+#include <SDL2/SDL_rect.h>
+#include <SDL2/SDL_render.h>
+#include <SDL2/SDL_thread.h>
+#include <SDL2/SDL_timer.h>
+#include <SDL2/SDL_video.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_ttf.h>
+
+const int SCREEN_WIDTH = 1280;
+const int SCREEN_HEIGHT = 720;
+
+typedef struct {
+    SDL_Window *window;
+    SDL_Renderer *renderer;
+    TTF_Font* font;
+}   App;
+
+App app;
+
+void Cleanup(void);
+void HandleInput(void);
+
+int main(int argc, char** argv) {
+    memset(&app, 0, sizeof(app));
+
+    atexit(Cleanup);
+
+    if (SDL_Init(SDL_INIT_VIDEO) < 0){
+        printf("SDL failed: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    app.window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
+
+    if (app.window == NULL){
+        printf("Window creation failed: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
+
+    app.renderer = SDL_CreateRenderer(app.window, -1, SDL_RENDERER_ACCELERATED);
+
+    if (app.renderer == NULL) {
+        printf("Renderer failed: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    while(1){
+
+        HandleInput();
+
+        SDL_Delay(16);
+
+        SDL_RenderPresent(app.renderer);
+    }
+}
+
+void Cleanup(void) {
+    SDL_DestroyWindow(app.window);
+    SDL_DestroyRenderer(app.renderer);
+    TTF_Quit();
+    SDL_Quit();
+}
+
+void HandleInput(void) {
+  SDL_Event event;
+  while(SDL_PollEvent(&event)) {
+    switch (event.type) {
+      case SDL_QUIT:
+        exit(0);
+        break;
+      case SDL_MOUSEBUTTONDOWN:
+        exit(0);
+      case SDL_KEYDOWN:
+      default:
+        break;
+    }
+  }
+}